Home / 7,821.35-11,735.81-3,438.23

Finding the Fourth Proportional to 7,821.35, 11,735.81 and 3,438.23

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Solution

The fourth proportional to 7,821.35, 11,735.81 and 3,438.23 is: 5,159.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.35 : 11,735.81 = 3,438.23 : x
  2. Step 2: Convert to fraction form
    7,821.35/11,735.81 = 3,438.23/x
  3. Step 3: Cross multiply
    7,821.35x = 11,735.81 × 3,438.23
  4. Step 4: Simplify right side
    7,821.35x = 40,350,338.15
  5. Step 5: Solve for x
    x = 40,350,338.15/7,821.35
  6. Step 6: Final answer
    x = 5,159.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.